2nd Credit Test - Deck 4

Question 1

What vasoactive substance is immediately released from mast cells ?

Answer 1

Histamine.

Question 2

Which types of hypersensitivity are there ?

Answer 2

• Serum sickness
• Tuberculin test
• Arthus reaction

Question 3

How long do you evaluate the test after for intradermal test for type 1 hypersensitivity ?

Answer 3

30 minutes.

Question 4

Serum sickness is which type of hypersensitivity ?

Answer 4

Type 3.

Question 5

Main application of indirect IFA is ?

Answer 5

Autoimmune diseases.

Question 6

What is the density of separating fluid when separating leukocytes ?

Answer 6

1,077-1,079

Question 7

In colourimetric test for respiratory burst NBT is changed to insoluble what ?

Answer 7

Formazan.

Question 8

Turks solution - the acetic acid does what ?

Answer 8

Lyses all RBC’s and platelets.

Question 9

Combs test is for detecting which type of hypersensitivity ?

Answer 9

Type 2.

Question 10

MHC restriction ?

Answer 10

TCR has to recognise both the Ag and the peptide.

Question 11

What labels the antigen in direct IFA ?

Answer 11

Primary antibody labelled with fluorochrome.

Question 12

CD16 is ligand to what in NK cell ?

Answer 12

Fc end on IgG.

Question 13

CD79 stimulates transmitter on what cell ?

Answer 13

B cell.

Question 14

What is haemolytic solution ?

Answer 14

2% sensitised sheep erythrocytes with amboceptor.

Question 15

Which is NOT type 2 hypersensitivity ?

Answer 15

Serum sickness.